Reefer
Fast Eddy Aki'a of Hawaii smokes a joint as thousands gathered to celebrate the state's medicinal marijuana laws and collectively light up at 4:20 p.m. in Civic Center Park April 20, 2012 in Denver, Colorado. less

Reefer
Fast Eddy Aki'a of Hawaii smokes a joint as thousands gathered to celebrate the state's medicinal marijuana laws and collectively light up at 4:20 p.m. in Civic Center Park April 20, 2012 in Denver, ... more

Pot
Singer Robert Plant, later of Led Zeppelin (center), and fellow Band Of Joy members John Elson (far left), Steve Taylor (2nd left), and Dave Evans (far right) pose with a group of drugs protesters holding pro-pot banners, circa late 1967 in England. less

Pot
Singer Robert Plant, later of Led Zeppelin (center), and fellow Band Of Joy members John Elson (far left), Steve Taylor (2nd left), and Dave Evans (far right) pose with a group of drugs protesters holding ... more

Photo: GAB Archive, Redferns

Pot
Singer Robert Plant, later of Led Zeppelin (center), and... Photo-4554155.61418 - seattlepi.com